BORIC ACID DETERGENT AND LUBRICATING APPLICATIONS THEREOF

To provide a boron-containing detergent.SOLUTION: Disclosed herein is an overbased alkaline earth metal hydrocarbyl-substituted salicylate detergent comprising both carbonate and borate moieties and exhibiting the following characteristics: a basicity index of at least 3.8; a ratio of a soap content...

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Bibliographische Detailangaben
Hauptverfasser: THOMAS WILKINSON, ALEXANDER COXON, ARA SAMONTE, MALLIKA RANA, OLIVER DELAMORE, MARCUS POPWICZ
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide a boron-containing detergent.SOLUTION: Disclosed herein is an overbased alkaline earth metal hydrocarbyl-substituted salicylate detergent comprising both carbonate and borate moieties and exhibiting the following characteristics: a basicity index of at least 3.8; a ratio of a soap content with respect to boron by mass% is greater than 55 mmol/kg; a soap content of at least 330 mmol/kg; a TBN, measured according to ASTM D2896, of at least 220 mg KOH/g; and a mass ratio of borate with respect to carbonate from 0.75 to 6.0, wherein the alkaline earth metal comprises calcium and/or magnesium, and the hydrocarbyl substitution comprises 9 to 30 carbon atoms. Methods of making the boron-containing salicylate detergent, specifically to be package-stable, are also disclosed, as well as package-stable lubricant additive package concentrates and lubricating oil compositions containing the same.SELECTED DRAWING: None 【課題】ホウ素含有洗浄剤を提供する。【解決手段】炭酸塩部分とホウ酸塩部分との両方を含み、以下の特徴:少なくとも3.8の塩基度指数;質量%でホウ素に対する石鹸含有量の比が55mmol/kg超;少なくとも330mmol/kgの石鹸含有量;ASTM D2896に従って測定した少なくとも220mgKOH/gのTBN;及び0.75~6.0の炭酸塩に対するホウ酸塩の質量比:を示す過塩基性アルカリ土類金属ヒドロカルビル置換サリチル酸塩洗浄剤を本明細書に開示する。前記アルカリ土類金属はカルシウム及び/又はマグネシウムを含み、前記ヒドロカルビル置換基の炭素原子数は9~30個である。また、具体的にパッケージ安定性を示すホウ素含有サリチル酸塩洗浄剤を製造する方法も開示し、更にパッケージ安定性を示す潤滑剤添加剤パッケージ濃縮物、及びそれを含有する潤滑油組成物も開示する。【選択図】なし